Generic PWS.y!6D41730EDCB9

This page shows details and results of our analysis on the malware Generic PWS.y!6D41730EDCB9

Overview

This is a Trojan detection. Unlike viruses, Trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include e-mail, malicious or hacked Web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.


Minimum Engine

5600.1067

File Length

229376

Description Added

2013-11-27

Description Modified

2013-11-27

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionGeneric PWS.y
Length229376 bytes
MD56d41730edcb9a7025e9eb087f06010f4
SHA1e820131fdb77e0dc5ea2ae272956dcdc7f596c27


Other Common Detection Aliases

Company NamesDetection Names
ahnlabTrojan/Win32.PcClient
avastWin32:Lolyda-C
AVG (GriSoft)Dropper.Generic2.AINK (Trojan horse)
aviraTR/Dropper.Gen2
KasperskyTrojan-GameThief.Win32.Emelent.awb
BitDefenderTrojan.Generic.4607235
clamavPUA.Win32.Packer.Upx-26
Dr.WebTrojan.DownLoader4.48653
F-ProtW32/OnlineGames.A.gen!GSA
FortiNetW32/Bjlog.OVM!tr
MicrosoftPWS:Win32/Dozmot.D
EsetWin32/TrojanDropper.Agent.OVM
SophosTroj/Dropr-DI
Trend MicroTROJ_DROPR.SMXC
vba32TrojanPSW.Bjlog

Other brands and names may be claimed as the property of others.


ActivitiesRisk Levels
Attempts to write to a memory location of a Windows system processHigh
Enumerates many system files and directories.Low
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaGeneric PWS.y
McAfee SupportedGeneric PWS.y



System Changes

Some path values have been replaced with environment variables as the exact location may vary with different configurations.
e.g.
%WINDIR% = \WINDOWS (Windows 9x/ME/XP/Vista/7), \WINNT (Windows NT/2000)
%PROGRAMFILES% = \Program Files


The following files were analyzed:

E820131FDB77E0DC5EA2AE272956DCDC7F596C27

The following files have been added to the system:

  • %TEMP%\g07g.dll
  • %TEMP%\Auxiliary.exe
  • %TEMP%\232812g07.dll
  • C:\Auxiliary.exe
  • %TEMP%\21.jpg
  • %ALLUSERSPROFILE%\DRM\gstbk.biz
  • %WINDIR%\SYSTEM32\f5859b27.rdb

The following files were temporarily written to disk then later removed:

  • %TEMP%\nszE.tmp
  • C:\ynbudritm
  • C:\svchost.exe

The following registry elements have been created:

  • HKEY_LOCAL_MACHINE\SOFTWARE\YNBUDRITM\
  • HKEY_LOCAL_MACHINE\SOFTWARE\YNBUDRITMY\
  • HKEY_LOCAL_MACHINE\SOFTWARE\YNBUDRITMY\PARAMETERS\

The following registry elements have been changed:

  • HKEY_LOCAL_MACHINE\SOFTWARE\YNBUDRITM\MODULE = C:\Auxiliary.exe
  • HKEY_LOCAL_MACHINE\SOFTWARE\YNBUDRITM\SERVICEDLL = C:\DOCUME~1\ALLUSE~1\DRM\gstbk.biz
  • HKEY_LOCAL_MACHINE\SOFTWARE\YNBUDRITM\SERVICEMAIN = Direct3DRMCreate
  • HKEY_LOCAL_MACHINE\SOFTWARE\YNBUDRITMY\DEPENDONSERVICE = RpcSs
  • HKEY_LOCAL_MACHINE\SOFTWARE\YNBUDRITMY\DESCRIPTION = Enables generic input access to Human Interface Devices (HID), which activates and maintains the use of predefined hot buttons on keyboards, remote controls, and other multimedia devices. If this service is stopped, hot buttons controlled by this service will no longer function. If this service is disabled, any services that explicitly depend on it will fail to start.
  • HKEY_LOCAL_MACHINE\SOFTWARE\YNBUDRITMY\DISPLAYNAME = Human Interface Device Access
  • HKEY_LOCAL_MACHINE\SOFTWARE\YNBUDRITMY\ERRORCONTROL = 1
  • HKEY_LOCAL_MACHINE\SOFTWARE\YNBUDRITMY\FAILUREACTIONS = [binary data]
  • HKEY_LOCAL_MACHINE\SOFTWARE\YNBUDRITMY\IMAGEPATH = %SystemRoot%\SYSTEM32\svchost.exe -k netsvcs
  • HKEY_LOCAL_MACHINE\SOFTWARE\YNBUDRITMY\OBJECTNAME = LocalSystem
  • HKEY_LOCAL_MACHINE\SOFTWARE\YNBUDRITMY\START = 4
  • HKEY_LOCAL_MACHINE\SOFTWARE\YNBUDRITMY\TYPE = 32
  • HKEY_LOCAL_MACHINE\SOFTWARE\YNBUDRITMY\PARAMETERS\SERVICEDLL = %SystemRoot%\SYSTEM32\hidserv.dll

Symptoms

This symptoms of this detection are the files, registry, and network communication referenced in the characteristics section.

Method of Infection

Trojans do not self-replicate. They are spread manually, often under the premise that the executable is something beneficial. Distribution channels include IRC, peer-to-peer networks, newsgroup postings, e-mail, etc.

Removal

Please use the following instructions for all supported versions of Windows:


1. Disable Windows System Restore. For instructions, please refer to: http://www.mcafee.com/us/downloads/free-tools/disabling-system-restore.aspx

2. Update your McAfee Anti-Virus product to the latest version (when possible), and ensure the latest DAT and Engine and any applicable EXTRA.DATs are installed.

3. Run a full system scan. (On-Demand Scan)

4. Reboot, as soon as it is convenient, to ensure all malicious components are removed.

Variants